On Jun 13, 2013, at 7:24 PM, Mike Ryan <miker...@lacklustre.net> wrote:
> Hi, I impelemented most of the BTLE support in Ubertooth.
>
>> So do LINKTYPE_BLUETOOTH_LE_LL/DLT_BLUETOOTH_LE_LL packets include the
>> preamble octet and the CRC?
>
> They include the 3 octet CRC, they do not include the preamble.
OK, I'll update the description on the "link-layer header types" page to note
that.
So the packet in the file has:
4 bytes of Access Address;
2-39 bytes of packet data;
3 bytes of CRC;
in sequential order, with nothing separating them, right?
> To validate the CRC you must know a per-connection CrcInit. This value
> will be stored in the PPI with each packet.
"Stored in the PPI"? Does that mean "stored in per-packet information kept by
the program reading the capture file", or does it mean "per-packet information
stored *in* the capture file"? If the latter, that presumably means there's
some form of pseudo-header preceding the Access Address.
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